Home / 20,687.60-31,045.26-7,360.08

Finding the Fourth Proportional to 20,687.60, 31,045.26 and 7,360.08

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Solution

The fourth proportional to 20,687.60, 31,045.26 and 7,360.08 is: 11,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.60 : 31,045.26 = 7,360.08 : x
  2. Step 2: Convert to fraction form
    20,687.60/31,045.26 = 7,360.08/x
  3. Step 3: Cross multiply
    20,687.60x = 31,045.26 × 7,360.08
  4. Step 4: Simplify right side
    20,687.60x = 228,495,597.22
  5. Step 5: Solve for x
    x = 228,495,597.22/20,687.60
  6. Step 6: Final answer
    x = 11,045.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.